| John L. Lewis Papers | Abstracts |
| James Lindahl Papers | Abstracts |
| C. Z. Lindsey Papers | Abstracts |
| Henry Richardson Linville Papers | Abstracts |
| Howard Lipton Papers | Abstracts |
| Ed Liska Papers | Abstracts |
| John W. Livingston Papers | Abstracts |
| Percy Llewellyn Papers | Abstracts |
| Frank Lohr Papers | Abstracts |
| Robert Lopez Papers | Abstracts |
| George Lutzai Papers | Abstracts |
| George Lyons Papers | Abstracts |
| Nora Maczko Papers | Abstracts |
| Michael Manning Papers | Abstracts |
| Blaine Marrin Papers | Abstracts |
| Ben Martin Papers | Abstracts |
| Gabriel R. Mason Papers | Abstracts |
| Fred Masters Papers | Abstracts |
| Joseph Mattson Papers | Abstracts |
| Emil Mazey Papers | Abstracts |
| Ernest Mazey Papers | Abstracts |
| Herbert T. McCreedy Papers | Abstracts |
| Thomas McNett Papers | Abstracts |
| Lewis H. Michener Papers | Abstracts |
| Michigan Farm Worker Ministry Coalition Records | Abstracts |
| Isadore Miles Papers | Abstracts |
| Ruth Milkman Papers | Abstracts |
| Ira A. Miller Papers | Abstracts |
| Robert J. Mills Papers | Abstracts |
| Prince Moon Papers | Abstracts |
| Ernest J. Moran Papers | Abstracts |
| Ken Morris Papers | Abstracts |
| Bette Murphy Papers | Abstracts |
| National Founders Association Records | Abstracts |
| National Policy Association Records | Abstracts |
| Mercedes Nelson Papers | Abstracts |
| Newspaper Guild Local 13 Records | Abstracts |
| Newspaper Guild Local 22: Detroit Records | Abstracts |
| Newspaper Guild Local 47: St. Louis Records | Abstracts |
| Newspaper Guild Local 82: Pacific Northwest Newspaper Guild Records | Abstracts |
| Tony Nicols Papers | Abstracts |
| Tatsuro Nomura Papers | Abstracts |
| Francis O'Rourke Diary | Abstracts |
| William Ogden Papers | Abstracts |
| John Oneka Papers | Abstracts |
| Orange County Interfaith Committee to Aid the Farm Workers Records | Abstracts |
| Owosso Education Association Records | Abstracts |
| Joseph F. Pagano Papers | Abstracts |
| Francis Palmer Papers | Abstracts |
| John Panzner Papers | Abstracts |
